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DS2407 Datasheet(PDF) 11 Page - Dallas Semiconductor

Part # DS2407
Description  Dual Addressable Switch Plus 1K.Bit Memory
PDF  31 Pages
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS2407 Datasheet(HTML) 11 Page - Dallas Semiconductor

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 11 / 31 page
background image
F0h
READ
MEMORY
?
N
BUS MASTER TX
TA1 (T7:T0)
BUS MASTER TX
TA2 (T15:T8)
DS2407 SETS MEMORY
ADDRESS = (T15:T0)
Y
BUS MASTER RX
DATA FROM
DATA MEMORY
BUS MASTER
TX RESET
?
END
OF DATA
MEMORY
?
DS2407 INCREMENTS
ADDRESS COUNTER
BUS MASTER RX
CRC16 OF COMMAND,
ADDRESS, DATA
BUS MASTER
TX RESET
?
BUS MASTER
RX 1’S
Y
N
Y
N
N
BUS MASTER
TX RESET
?
N
Y
Y
MASTER TX MEMORY
FUNCTION COMMAND
DS2407 TX
PRESENCE PULSE
BUS MASTER
TX RESET
A5h
EXTENDED
READ MEMORY
?
N
BUS MASTER TX
TA1 (T7:T0)
BUS MASTER TX
TA2 (T15:T8)
DS2407 SETS MEMORY
ADDRESS = (T15:T0)
Y
BUS MASTER RX
REDIR. BYTE
CRC
CORRECT
?
DS2407 INCREMENTS
ADDRESS COUNTER
Y
N
BUS MASTER RX
DATA FROM
DATA MEMORY
BUS MASTER
TX RESET
?
END OF
PAGE
?
BUS MASTER RX CRC16
OF PRECEDING PAGE OF DATA
END OF
DATA
MEMORY
?
BUS MASTER
TX RESET
?
BUS MASTER
RX 1’S
Y
N
N
Y
Y
Y
N
DS2407 INCREMENTS
ADDRESS COUNTER
BUS MASTER RX CRC16 OF COMMAND,
ADDRESS, REDIR. BYTE
(1ST PASS)
CRC16 OF REDIR. BYTE (SUBSEQUENT
PASSES)
BUS MASTER
TX RESET
CRC
CORRECT
?
N
N
Y
LEGEND:
DECISION MADE
BY THE MASTER
DECISION MADE
BY DS2407
Y
TO FIGURE 6
SECOND PART
DS2407
012099 11/31
MEMORY FUNCTION FLOW CHART Figure 6



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